The Fluke 8842A is a 5.5-digit precision digital multimeter engineered for demanding benchtop and system applications requiring high accuracy and stability. Building on the 8840A platform, it incorporates hermetically sealed thin-film resistors and a proprietary CMOS monolithic A/D converter to deliver measurement performance suitable for electronics testing, calibration laboratories, and automated test systems. The instrument combines exceptional DC voltage accuracy of 0.003% at 1 year with comprehensive measurement capabilities across voltage, current, and resistance ranges, backed by a voltage reference comparable to the Fluke 732B DC Reference Standard.
## Technical Specifications
**Display & Resolution**
• Vacuum Fluorescent Display (VFD), 5.5 digits
• Reading rates up to 100 readings/second (selectable: Slow, Medium, Fast)
**Measurement Ranges & Accuracy**
• DC Voltage: 20 mV to 1000 V with 0.003% basic accuracy (1 year), 0.005% (2 years); resolution 100 nV on 20 mV range
• AC Voltage (Option 09): 200 mV to 700 V RMS with 0.08% basic accuracy (1 year)
• Resistance: 20 Ω to 20 MΩ with 0.006% basic accuracy (1 year); resolution 100 µΩ on 20 Ω range; 2-wire and 4-wire measurement
• DC Current: 200 mA to 2000 mA with 1 µA resolution on 200 mA range
**Input Specifications**
• DC Voltage input impedance: 10 MΩ
• AC Voltage input impedance: 1 MΩ shunted by 140 dB at DC
• Normal Mode Rejection Ratio: 85 dB at 50/60 Hz (S rate), 35 dB at 400 Hz (M rate)
• Temperature coefficient: <0.1× accuracy specification per °C
• Burden voltage: 1 V DC or RMS AC typical at full scale
## Key Features
• Precision thin-film resistor networks for long-term stability
• Analog switch ICs for improved performance and reliability
• Metal case provides EMI shielding for system integration
• Front/rear input selection via front panel switch
## Typical Applications
Electronics testing, precision calibration laboratories, automated test systems requiring high-resolution DC measurements and extended measurement stability.
## Compatibility & Integration
IEEE-488 interface (Option -05) enables full programmability, including external trigger input, sample complete output, and automated calibration control. Compatible with system software written for the 8840A.
